A British invasion swamped Korea's largest music festival at Jisan Valley, with Radiohead performing for the first time in Korea along fellow headliners The Stone Roses and Beady Eye.

In between sets, the 101,000 revelers drank, danced or held on to their square of grass for dear life over the course of three days. Revelers lucky enough to land a camping spot or -- gasp -- an actual room nearby gloated over the poor souls who had to trudge to the nearest jjimjilbang to catch some sleep for a few hours before being kicked out at 7 a.m.

In response to the near-religious chanting for an encore from their frenzied fans, Radiohead went 40 minutes overtime, while Owl City tweeted after his show that Korea was his favorite place to play on the planet.

Among the local lineup, rock group Nell was the huge standout, performing epic renditions of their hits "Stay" and "Standing in the Rain" as a preview for their September concert.